The CAP Rocket was created to enhance the Civil Air Patrol
Model Rocketry Program (outlined in the CAP training manual CAPM
50-20) by providing an inexpensive, easy to assemble rocket, which
can be used with Estes style rocket motors.
Based on the review
feedback from EMRR, I made some revisions to the fins & nose cone
(on the black and gray version. Others to come soon.), and I am in the
process of revising the instructions. Thanks Nick!
Red, Whire & Blue Rocket
A,B or C Engine
Black and Gray Rocket A,B
or C Engine
Black and Gray Rocket
This next version is for teachers to make multiple copies on a Xerox
machine for class situations.
Line Drawing Rocket
Instruction for printing and assembling the CAP Rocket
1. Download and save the CAP Rocket JPG files in a convenient place, like
2. Open your word processor and insert the files into a new blank document.
(e.g. In Word: Insert..Picture..From File)
3. Set the width margins to .5 in on each side and stretch the image to
match the margins, making sure to maintain proportions of the image. (You
may have to adjust the image size depending on the weight of paper you
4. Print the pattern on your color printer using white, heavy card stock.
Rocket pattern printed on white heavy index card stock
Elmer's type glue and/or Stick Glue
10-12 inches of flat 1/8 inch elastic
1 cubic inch modeling clay
3" by 24" parachute material or very light, brightly-colored
3 spent Estes rocket motors (used to form the rocket tube)
launch rod or small Phillips screw driver
ruler or straight edge
scotch tape to hold the Estes engine in place
1. Carefully cut out all pieces.
2. Roll the main rocket body (1. Rocket tube) with the text rolled up
inside to strengthen the tube. Glue into shape.
Tip: Roll the tube
around a spent engine to see how the lines on either side of the CAP seal
3. Tri fold and glue (5. engine stop ring) and shape into ring. With a
stick, apply a ring of glue 2.5 inches inside the bottom of tube.
Note: Use a spent
engine to push the engine ring into position, and press it into place
against tube body with a stick or screwdriver.
4. Glue (7. shock cord attachment) to both ends of approx. 12 inches of
1/8 inch elastic.
5. If you are making a booster for the egg lifter, skip to step 6.
a. Form (2. nose
cone) into shape and glue.
b. Wrap (8. nose
cone collar) around top of rocket tube and glue last inch into place.
Tip: Insert a spent engine into top of tube to help shape nose cone collar.
c. Slip collar
off of tube and tack inside tab of collar.
d. Glue white tabs
of nose cone to inside of collar making sure nose cone is straight.
e. Glue one shock
cord attachment into nose cone above the collar.
f. Roll approx.
1 cubic inch of modeling clay into a thin "snake" and feed clay
into nose, pressing into place with the eraser end of a pencil.
Note: If modeling clay is unavailable, glue a fishing weight or 2 pennies
into nose cone
6. Fold all three (3. fin) in half along leading edge.
7. Fold (4.fin stiffener) and tack with glue along leading edge to make
the wedge shape.
Note: Yellow and
black area will become the trailing edge of fins.
8. Smear thin coat of glue to entire back side of (3. fin) and insert
(4. fin stiffener).
9. Attach fins to rocket tube.
10. Roll (6. Launching lug) into tube and attach to rocket tube.
Note: Make sure
launching lug does not interfere with fins.
Note2: Use rod
or small screwdriver to help form launch lug.
11. Glue other end of (7. shock cord attachment) to top end of rocket
12. Construct a streamer or parachute and attach to approximate middle
of shock cord.
TIP: Several coats of spray-on "clear coat" strengthens
the fins and makes the rocket look good to. Or you can use a color spray
paint and decals to give your rocket your own unique look.
Refer to CAP Model Rocketry Program (CAPM
50-20) and observe all safety considerations in the NAR
Safety Code whenever conducting rocket launches.
TIP: Wrap about 1tsp tempera paint powder into a square of wadding
material and place on top of wadding to make a visual marker when the
ejection charge fires.
Designed by William H. Jackson, Majt, CAP - Capital Composite
Squadron, Santa Fe, New Mexico, SWR-NM-01